Polishing-machine.



J. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. e. 1914.

COLUMBIA PLANOHRAPH (10.. WASHINGTON, Dv c.

J. F. GAIL.

POLISHING MACHINE.

APPLlCATION FILED FEB. e, 1914.

Patented Sept. 28, 1915.

7 SHEETS-SHEET 2.

COLUMBIA PLANOGRAI'H C0.,WASH1NGTON. 1:.c.

J. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. 6. 1914.

1,154,696. PatentedSept. 28, 1915.

7 SHEETSSHEET 3.

F 12.5 iv

ylmefefe/ y, m

COLUMBIA PLANOGRAPH cc., WASHINGTON, n. c.

J. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. 6. 1914.

Patented Sept. 28, 1915.

7 SHEETSSHEET 4.

COLUMBIA PLANOORAPH CO.,WASHINGTON, n c.

.I. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. 6. 1914.

Patented Sept. 28, 1915.

7 SHEETS-SHEET 5.

J. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. 6. 1914.

Patented Sept. 28., 1915.

7 SHEETS-SHEET e.

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i Q wmf w fi NNQN MIL. ML. N lllll COLUMBIA PLANOGRAPH $0., WASHINGTON. D. c.

J. F. GAIL.

POLISHING MACHINE.

APPLICATION FILED FEB. 6. 1914.

1,154,69, PatentedSept. 28,1915.

7 SHEETS-SHEET 7.

COLUMBIA PLANOGRAPH (Id-.WASHINGTON, D 1:v

TE% var. v

JOHN F. GAIL, OF KENOSHA, WISCONSIN.

POLISI'ZING-MAOHINE.

Specification of Letters Patent.

Patented Sept. 28, 1915.

To all whom it may concern:

Be it known that I, JOHN F. GAIL, a citizen of the United States, residing in the city of Kenosha, county of Kenosha, and State of l/Visconsin, have invented certain new and useful Improvements in Polishing- Machines of which the following is a speciiication.

'1 his invention relates to improvements in polishing machines and refers more partic-' ularly to a machine for polishing brass tub- Eng, used in brass beds or other metal. furniture and the like.

Among the salient objects of the invention are to provide a construction in which a series of tubes is simultaneously and automatically polished, the machine being so arranged as to insure a uniform polishing of the respective tubes; to provide a construction in which the tubes are mounted on a traveling carriage which is reciprocated hack and forth beneath a revolving polishrig wheel for a given number of reciproca tions and in which the tubes are each partially turned on their axes during predetermined points in the travel of said carriage, the polishing wheel being rendered temporarily inoperative during said turning movement so as to prevent scratching of the surface of said tubes; to provide a construction in which the tubes are held on supporting saddles adapted to be raised and lowered to carry the tubes into position for mounting on the traveling carriage and for receiving the tubes from the carriage after the former have been polished, the operation of shifting the saddles into and out of position be ing entirely automatic and taking place at the end of the polishing operation; to provide a construction in which the tubes to be polished are independently mounted between spindles formed as part of the traveling carriage, the latter being provided with adjustable parts for accommodating various lengths and sizes of tubes; to provide a construction in which the tubes as they pass by the polishing wheel are held yieldablv in engagement there "ith by spring mounted bed-roller and in which both the polishing wheel and bed roller can bead-justed to accommodate tubes of various diameters; to provide in a construction of the character referred to novel. mechanismfor actuating the belt shifter to reverse the direction of the rotation of the traveling carriage, and which also serves as a step up counter 111E911 anism for determining the number of reciprocations of said carriage; to provide means for automatically braking the carriage and associated parts at the termination. of the polishing operation; to provide novel means fOr adjustably holding the tubes on the carriage spindles and under spring tension during the polishing operation and in which the whole series of tubes may be simultaneously locked into position or released from the spindles and in general to provide an improved. construction of the character referred to.

ihe invention consists in the matters hereinafter described and more particularly pointed out in the appended claims.

in the drawings Figure l is a front side elevation of my improved polishing machine with. parts broken out to reduce the size of the drawing and certain details being omitted for clearness of illustration; Fig. 2 is a view similar to Fig. 1 on an enlarged scale with the ends of the machine broken away and certain other parts shown in section in order to bring out various details of construction. Fig. 3 is an enlarged end elevationtaken from the right hand end of Fig. 1 with parts broken away and shown in section to hung out the details of construction; Fig. 4c is a fragmentary top plan view of the central part of the machine taken below the polishing wheel the support of the latter being shown in section and with certain details omitted for purpose of clearness; Figs. 5 and 6 taken together show a top plan view of the traveling carriage with parts broken out in order to reduce the size of the drawing; Fig. 7 'is an enlarged fragmen ary view taken centrally through the machine, substantially at right angles to Fig. 2, and showing more particularly the manner of adjustably mounting the polishing wheel, and also the driving mecha nism for the traveling carriage; Fig. 8 is a detail view of the counter member which determines the number of reciprocations of the traveling carriage; Fig. 9 is a detail view showing the pawl and ratchet members which rotate the tubes on their axes; Fig. 10 is a side elevation of one of the spindle supports at the tail or rear end of the can riage; Fig. 11 is an end view of the same.

Fig. 12 is a side elevation of one of the spindle supports at the front end of the carriage.

Referring to the drawingsl designates the main standard, 2 and 3 the end supports of the frame. On these standards are mounted a pair of parallel longitudinally extending track members 4 and 5, which take the form of round rods as shown more clearly in Fig. 7. Upon the track members is mounted a reclprocatlng carriage deslgnated as a whole 6. This carriage combracket 13 secured by the casting 8. The

portion of the rod 12 adjacent the bracket 13 1s rectangular in cross sect1on as shown more clearly in Flgs. 6 and 6, for a purpose hereinafter described. The lower ends of the castings 7 and 8 are recessed to receive a rack bar 15 which extends below and between the track members 4 and 5. To the front end of the rod 12 is bolted or otherwise secured a pair of cross frame v members 16 and 17 which preferably take the form of castings as shown more clearly in Figs. 5 and 7. To the rear end of the rod 1.2 is fastened a cross frame member 18 which also takes the form of a casting and is connected to cross members 16 and 17 by a side bar 19. I V

Describing now the manner of mounting the tube spindles on'the traveling carriage, the frame members 16 and 17 together serve as a head stock to support the front tube spindles 20, 20. These spindles 20 are mounted in holders 21 (see Fig. 12) which holders are seated in suitable recesses or cut away portion 22, 22 formed in the cross frame members 16 and 17. These holders 21 are detachablv mounted in the frame members 16 and 17 in order that the holders and spindles may be removed so that spindles of different sizes may be substituted if desired. To this end a pin 24 extends through suitable apertures 25 in 'the head ends of the holders 21. The front end of each spindle 20 is provided with a spur gear 23, 23 which meshes with each other as shown more clearly in Fig. 5. The forward movement of the spindle through the holders 21 is limited by collars 26 mounted on the spindles. The rear end of each spindle is provided with a prong'27 adapted to hold one end of the tubes 28 which are to be buffed or polished.

Referring now to the rear end of the carriage, on the flattened portion 14 of the rod- 12 is secured a clamping member designated as a whole 28 comprising upper and lower portions 29 and 30, which fit around the member 14 and are locked thereto by means be polished.

of a threaded bolt 31 which is manually operated by a crank arm 32. The arrange ment is such that by loosening the threaded bolt the clamp may be adjusted lengthwise on the rod 14-. The clamping member 28 forms a part of a skeleton casting 33 which serves as a tail stock for they spindles. The opposite side of the tail stock 33 is provided with a shoe 34 which rides on the side bar 19. In the head stock is mounted a pluralityof tube holders 35, sevenqin the present instance, which are held at the front end by supporting plate 36 and at their rear ends by'cross plate 37. The rear end of each holder 35 is provided with a short rack member 38. These rack members 38 are moved together by means of a gear seg ment 39 WhlCh'GXiJQIIClS entirely across the face of the racks, and is pivotally mounted in cars 40 forming extensions of the tail stock casting. The gear segment is operated by means of a handle 41. This handle is, fixed to the gear segment so that'it will rotate the latter but has limited lateral movement in order that it may be swung clear of a latch member 42 which is engaged by a pin 43 on the handle. normally held into the latch 42 by means of a spring 44. By the arrangement just'described, it will be seen that by operating the handle 41 the holders 35 can be moved back The pin 7 43 is i and forth for a limited distance in the tail stock. In-the holders 35 are mounted the of these spindles are provided with prongs 46 for holding. the rearend's of the tubes to On each of'these spindles is mounted a coiled expansion spring 47 the rear ends of which abut against the holders 35, and the front ends of which abut against collars 48 carried by the spindles 45. I These springs normally tend to force the spindles forwardly. The spring tension on the tube spindles may be increased or lessenedhby shifting the holders 35 through the action of the rack bar'38, segmental gear 39 and handle 41. The tubes are locked in position on the spindles simply by operating the handle 41 which actuates the rack bar 38.

Describing now the manner of reciproeating the traveling carriage, the rack bar 15 is actuated by meansv of a spur pinion 49 carried by a short shaft 50 j ournaled in suitable bearings in the main standard 1. i

The rear end'of the shaft 50 carries a spur gear 51 which 'mesheswith a similar gear 52 on the belt pulley shaft53. -The'shaft 53 is mounted in a forked bracket 54 carried by main standard 1.- On the shaft 53' is which drive in opposite directions, the belt 1 59 serves to rotate the shaft in a direction to move the carriage. forwardly while the opposite direction to 'reciprocate'the' carrlage rearwardly.

member by means of a pair'of rollers 72" mounted in pivoted arms 73', WlllCll are held otherbelt serves to drive the shaft in'the The machine is so'arranged that the belts are shifted alternatively fronrtheir respec-" tiveloose pulley to the driving pulley at the endiof the travel of'the carriagein eitherdirection. provided with an extension on which is pivoted as shown at'6l a belt shifter arm 62, one end of which terminates in a curved extension 63. This member 63 is pivoted as shown at 64 to a plate 65 which slides in a grooved guide way 66 carried by the bracket 60. To the plate 65 is rigidly connected a belt gripper member 67 which takes the form of a bent plate or arm provided with apertures 70 and 71 to receive the respective belts. The plate 65 is held yieldably in j whatever position it is left by the shifter 1 together by coiled spring 74. The arms 73 are pivoted to an extension 75 0f the'bracket member 60. The rollers 72 are adapted to T engage notches 76 formed in plate 65 in an obvious manner. I

Describing now themanner'of actuating the belt shifter arm 62, to the baseof the main standard 1 is pivoted a foot lever 77 connecting to an operating cable'78, one end of which is connected at 79 to the forward end of the arm 62. The cable'78 passes over an anti-friction pulley 80 grooved in the standard l'as shown in Fig. 1. The actuation of this lever pulls the arm 62 in the direction indicated by the arrow a (Fig 4). This shifter belt 59 then moves the belt over the drive pulley. The'end of the lever '62 is provided with a head portion 81 having a recessed portion '82. As the lever '62 is swung in the direction of the arrow at, heretofore described, the recessed portion engages a pin or stud 83 carried by a reciprocatory rod8at which reciprocates in' bearings 85 carried 'by plate 86 rigidly secured as'shown at 87 to the standard 1. As here-' tofore stated, the arm 62 has now been shifted so'that the belt 59 engages the drive pulley 57. The carriage'is now traveling forwardly. "0n the tailstock of the carriage is mounted a finger 88 whichis adapted to engage a block 89, carried by the rod 84. VVhen the finger 88 engages this stop or block 89, it carries the rod 8a forwardly'in its bearings. The arm 62 being'eonnected Y tothe finger 83"swings the arm"62 in the direction of the arrow 6 (Fig. 4-), shiftsthe mounted on astud 102,'on the plate 86., is; a sele'ctor wheel 103' having in its ps belt 59 backonits loose pulley and'at 'the same time carries the belt'58 onto the drive pulley. This-reverses the direction of travel of the rack bar and the carriage starts rearwardly. It will-be understood-that the parts just described are so arranged that th'isb'elt 'shifting'will not take" place lii'itil the" ear 'riage-has' reached the end of its forward "movement oft'ravel. The pin 83 is held in 'thefrecess 82 ofthe head 81 by a bow-spring *90.- This spring 90a lso'se'rves' to rock the arm 84; which is loosely mounted in bearings 85for a purpose heremafterdescribed. The rack'bar 15 is now traveling rearwardly for To this end, the'bracket 5i is the reason that the'belt'SS- is now riding on the drive pulley 57.

' As the ca'rrifag'e travels"rearwardly, means are provided for "partially turning the tube spindles andassociatedtubes on their axes. it will be remembered that the tube spindles 20ers provided with inter-meshing gears 23. One of these tube spindles is provided with an -extension 91 on which is mounted a ratchet wheel 92. Cooperating with this 1 ratchet wheel is a pawl. member 93 slidably mounted as shown at 94: in the head stock. The pawl is provided with a cam extension 95' 'wh ich is adapted to be engaged by cam 'm'e'1nber"96'carried by the plate 86 which is rigid with'the standard l as heretofore described. The p'awl'is'normally held in re tra'cted' position by 'spring 97' and is limited in its movement by a stop'98. The ratchet wheel' 92 is provided with a stop-dog 99.

A-s th'e'traveling' carriage moves rearwardly.

"the cam'member 96-"enga'ges the cam 95 and forces the'p'a'wl'93 outwardly to step up the ratchet wheel 'one step. This movement is communicated through the trainof gears to the various spindles thereby partially turning the tubes. Itwill' be understood that this turning'of the spindle is automatically accomplished 'on"ea-ch rearward reciproca- 'tion of the traveling carriage. The parts j'ust"descri'bed are" so timed tliatthe tubes "will be turned so that all parts of the sur- =facethereof-wi11' be uniformly polished or buffed.

As the carriage approaches'the-"limit of its rearward travel. means are provided for automatically f reversing the belts'on the drive pulley. Onthe rod -12 ofthe traveling carriage is mounted a finger 100 which "cations or the traveling carriage. This consists in an automatic timing mechanism ri'pherv al seri'es of circumferential notches "lObf uniform 'depth and a single deep notch or groove as shown more clearly in Fig. 8. .The numberiof notches may be .to the disk and at the other to a latch memher 112. The'latch member 112 is pivoted as shown at 113 to the standard 1 and is normally held up by spring 114 secured at one end to the latch and at the other to the standard 1. C11 this latch is a roller 115 which sits in the notches 104 and 105 and yieldably holds the selector wheel in the position to which it has been stepped by the pawl 107 and ratchet wheel 106. It will be understood from the foregoing description that on each forward reciprocation of the carriage the cam member 110 will engage the overhanging finger 109, rock the disk 108 thus causing the pawl 107 to step the ratchet wheel and associate selector wheel up one step. lltmay be here noted that the tubes are so turned relative to the number of reciprocations of the carriage that each portion of the tube will obtain the same polish, for example, if the carriage reciprocates sixteen times, the tubes might be turned one-eighth or one-quarter of a turn at each reciprocation.

When the selector wheel has been turned so that the roller 115 engages the deep notch 105, the carriage is stopped. As the roller 115 remains in the deep notch it permits the latch member 112 to move upwardly through the action of the coiled spring 114. On the outer end of the latch 112 is a T- shaped head 116 which lies. below the rod 84.- On the upper face of the head. 116 is a cam block 117 which as the latch 112 moves upwardly is brought into the path of the finger 100 mounted on the rod 12 v as heretofore described, the pin 118 will engage the cam 117 and thus rock the rod 84 to the position shown in dotted lines in Fig.

. 7. This swings the finger 83 out of the recess-82 on the head of the shifter arm 62 and leaves the belts on the loose pulleys. It is to be understood. that the arm 84 will be rocked so as to release the belt shifter arm 82 only when. the cam on the latch 112 is raised up in the path at the pin 1115 as heretofore described.- Accordingly, while the roller 115 is riding in the shallow notches of the selector wheel, the cam lies in a planebelow the path of the pin 118, and the connection of the belt shifter arm to the rod is not efiected. When'the roller reaches the deep notch 105, the belts shift to the idler pulleys and the machine of rod 84 as followswhile the machine is'run- I ning, the parts-are so arranged that on the reciprocation of the rod 84, it does not travel far enough; rearwardly tov reach the arm 124 of the braking mechanism. W hen the belts, however, are shifted to the loose pulleys and the shifting mechanism disconnectcdfrom the rod 84 heretofore described, the momentum of the machine issuflicient to carry the rod 84 rearwardly, so that the block 89 actuates the arm 124 and thus tightens the brake-band and automatically brakes the machine.

Describing now the polishing'mechanism, 1n a frame head 125 provided with bearings 126 is mounted a drive shaft 127, on

one end of which is secured a polishing wheel 128. The frame head 125 is carried by a post 129 which is adjustably mounted in themain standard 11 The lower end of this post 129 is provided with a screwthreaded extension 130 which is threaded through a nut 131 rigidly supported inside the standard 1 as shown clearly in Fig. 3.

Thescrew 130 carries a'ratchet wheel 182.

which is actuated by spring dog 183 carried by a handle 134. The screw 130 projects through a bearing 185. carried by bracket 13 6 supported from the main frame. The post 129 is slotted as shown at 137 in order that the post may be raised and lowered without affecting the drive shaft 50.. The; wheel shaft 127 is provided with a pulley 138 and a drive belt 139 connected to any suitable source of power.

As heretofore stated, a bed roller is provided for yieldably holding the tubes, in-engagement with the polishing wheel. This roller 140 is journaled in arms 141 of a frame 142. The frame. 142 is pivoted as shown at 143, to an adjustable plate or bracket 144. The roller 140 is'normally'held up in engagement with'the under-sides. of the tubes by means of a spring 145 fastened at 14:6 to the reagent. of the pivoted frame,

and at 1 17 to the standard 1. The plate-or bracket 14st is bolted as shown at 1&8 to a stationary casting 1 19 connected to the stationary standard 1. The plate 14% is pro--' Vided with slots 150 whereby it maybe adthe tubes,'a spring 169 is secured at one end justed on bolts 148. The purpose of adjust ing this plate is to set the rollers for tubes of different size.

In order to support the traveling carriage at'the point where the tubes pass between the polishing wheel and bed roller, on the castsure of the bed roller on the underside of the tube at the end of the travel of the tubes in either direction duringthe reciprocation of the carriage," on the rear endof the pivoted frame 1&2 is a cam roller 153. When the carriage approaches the limit of its travel of forward movement it rides upon a cam 154- secured on the tail stock of the'carriage.

-.t1on with amain frame, of a reclprocatory This rocks the pivoted frame 142 of the mechanism which carries the roller'out ofengagement with the tubes. The same result is obtained when the carriage approaches its rearward limit of travel, the roller then riding up on a cam 155 mounted on the side bar 19 of the carriage. It shoul'd be here noted that the numbers 21 and 85 have a oer-- tain amount of vertical play in their respective holders so that when the bed roller pres sure is removed from the under surfaceof the tubes, the latter may drop out of contact with the polishing wheel.

Describing now the mechanism for-receiv ing the tubes after they have been polished,

to a bracket 156 on the base 3 is pivoted'a pair of'links 157. The front 'end of these links 157 is pivoted to a block 158 carrying a bar 159. The front end of this bar 159 is secured to a casting or head 160 supported by links 161 pivoted as shown at 162 to the casting or head 160, and at 163 to the bracket 1 19. On the bar 159 is adjustably mounted a pair of saddles 16 1 and 165, which saddles are grooved as shown at 166 to receive the tubes. As the carriage approaches its rearward limit of travel on the last reciprocation, a cam 1.67 carried by the end member 18 of the traveling carriage engages a cam block 168 mounted on the bar 159 and lifts the bar so as to bring the saddles up to the to insure of the saddles moving away from as shown at 170 to 'thelink '15? and at its otherend at 171 to the track 4 which spring tends to pull the bar downwardly.

The inventionis not limited to the details of construction shown, except as set forth in the appended claims. I

I claim as my invention 2- 1. In a polishing machine, the combination with a main frame, of a reciprocatory carriagemounted thereon, a work support carried by 1 said carriage, a polishing wheel, a bed roller for holding the work in engagement with said polishing wheel and means for actuating said parts.

2. In a polishing machine, the combina- :tion with-a main frame, of a reciprocatory carriage mounted thereon, a plurality of work supports carried by said carriage, a polishing wheel, a spring actuated bed roller for holding'the work yielda'bly in engagementwith said polishing wheel and means for actuating said parts.

3. In a polishingmachinefthe combinacarriage-mounted thereon, a plurality of work supportmgspmdles carried by said carr1age,-a polishing wheel, bed roller for holding the work yieldably in engagement with said polishing wheel, means for partially turning the spindles at predetermined intervals in the travel of the carriage and means for actuating said various parts.

i. In a polishing machine, the combina-' tion of a main frame, a reciprocatory carriage'mounted thereon, a series of WOIK supports on said'carriage for holding contemporaneously a plurality of objects to be polished, a polishing memberpmeans for holding the objects in engagement with said polishing member, automatic means'for reciprocating said carriage and automatic meansfor rotating said objects.

5. In a polishing machine, the combination with a main frame, of a travelingcarriage mounted thereon, pinion and rack mechanisms for operating said carriage, a

series of adjustably mounted work supporting members on said carriage for holding a plurality of objects to be polished, a polishing wheel mounted above said carriage, means for holding the objects in engag ment with said wheel as they pass by the latter, and means for turning said objects at predetermined intervals in the travel of said carriage.

6. In a polishing machine, the combina tion with a main frame, of a reciprocatory carriage mounted thereon, a plurality of work supporting spindles carried by said carriage for holding the objects to be polished, a polishing wheel, means for holding the objects in engagement with said polishing wheel, means for intermittently rotating the ob ects at predetermined 1ntervals in the travel of the carriage, and means for rendering the polishing Wheel inoperative upon said objects during said rotation of the objects.

7 In a polishingmachine, the combination With a main frame, of a reciprocatory' carriage mounted thereon, a plurality of Work supporting members carried by said carriage for holding the objects to be poiished, a polishing wheel, a spring actuated bed roller for holding the objects yieldably carriage mounted thereon, a polishing Wheel, means for intermittently rotating the Work and means for rendering the polishing Wheel inoperative on said objects during said rotation.

8. In a polishing machine, the combinationfWith a main frame, of a reciprocatory carriage mounted thereon, a polishing whee a Work supporting member carried by said carriage for holding the objects to be polished, said Work supporting member having vertical play on said carriage, means for pressing the object in engagement With said polishing Wheel, and means for rendering said pressing means temporarily inoperative to allou the object to be removed from engagement with said polishing Wheel at predetermined intervals.

9. In a polishing machine, the combination of a main frame, a reciprocatory carriage mounted thereon comprising a pair of stock members, one of said stock members being adjustably mounted on said carriage, a plurality of pairs of members carried by said stock members for supporting contemporaneously a plurality of objects to be operated upon, avpolishing Wheel adapted to engage the work during the travel of the carriage, and means for actuating said polishing Wheel and carriage.

tion With. a main frame, of a reciprocatory carrier mounted therein and having a plurality of Work supporting members for-holding contemporaneously a plurality of objects to be polished, shifting mechanism for automatically reversing the direction of travel of the carrier, means for automatically stopping said carrier after a predetermined number of reciprocations thereof, a polishing Wheel adapted to engage the objects While traveling with said carrier,

means for simultaneously turning the OlO-i jects and means for actuating said various parts. r

12. In a polishing machine, the combina-- riage after a predetermined number ofre ciprocations thereof.

13. In a polishing machine, the combination with a main frame, of a traveling carriage mounted thereon, pinion and rack mechanismfor reciprocating said carriage back and forth switch mechanism o erated by the reciprocationsof said carriage for changing the direction of travel of Said carriage, means for removing the power applied to said pinion and rack mechanism after a predetermined number of reciprocations of said carriage and brake applying means for preventing motion of said carriage after the power has been removed from said reciprocating mechanism. j

14. In a polishing machine, the combination with a mainframe, of a reciprocatory carriage mounted thereon, means for reciprocating said carriage a, predetermined nunia ber of times, a polishing wheel, a work supporting member on said carriage for holding the object to be polished, means for effecting engagement between the object and said polishing Wheel and means for extending the travel of said carriage in one direction after said predetermined number of reciprocations thereof.

15. In a polishing machine, the combination With a main frame, of a carrler mounted thereon having a plurality of supporting' members for holding the objects to be polished, a polishing Wheehmeans for holding the objects in operative engagement with said polishing Wheel, means for reciprocating said carriage between given limits of motion, means for automatically stopping said carriage after a predetermined number reciprocations thereof, and means-for permitting said carriage to over-run one of said limits in one thereof. 7 7

16, In a polishing machine, the combination With a main frame, of a carrier mounted thereon and having a series of supporting members thereon for holding simultaneously a pluralityv of .objects to be polished,"

and a supporting saddle for receiving simultaneously said plurality of objects and placing them in position to be secured in-said supporting members.

17. In a polishing machine, the combina- 7 tion With a main frame, of a reciprocatory carrier mounted thereon and having a plurality of supports thereon for holding the f direction after the. stopping objects to be polished, a polishing Wheel, means for effecting operative engagement between the objects and said polishing Wheel, a supporting saddle for facilitating the application or said objects to the supporting members prior to the polishing operation, means for automatically stopping the polishing operation, after a predetermined number of intervals and means for placing said supporting saddle in operative relation at the end of said polishing operation.

18. In a polishing machine the combina-v tion of a main frame, a reciprocatory carriage mounted thereon, a series of pairs of Work supports for contemporaneously holding a plurality of objects to be polished and carried by said carriage, a polishing Wheel, a spring-actuated bed roller for holding the Work in engagement With said polishing Wheel, means for reciprocating said carriage a predetermined number of times and then arresting said reciprocations, a normally inoperative supporting saddle for facilitating the application of the Work to said supports, and means for placing said saddle in operative position after the arrest of said reciprocations.

19. In a machine of the character described the combination With a plurality of chucks, a movable saddle provided with suitable seats t'or the objects to be Worked, means for moving said saddle into position to facilitate the application of the object to' the chucks and means for returning said saddle to its normal position at the commencement of the Working operation.

20. In a polishing machine, the combination of a series of chucks, a movable saddle With a series of suitable seats for a series of objects to be polished contemporaneously, means for moving said saddle into position to facilitate the application of the, chucks and means for simultaneously engaging said objects with the chucks When the saddle is in such position.

21. In a polishing machine, the combination of a plurality of chucks, a movable saddle with suitable seats for the objects to be polished, means for moving said saddle into position to facilitate the application of the chucks, means for simultaneously engaging said objects with the chucks When the saddle is in such position and automatic means for returning said saddle to normal.

22. In a machine of the class described, the combination of a series of Work-supporting spindles, a movable saddle provided With suitable seats for supporting the objects to be operated upon for facilitating the application of said objects to the spindles, automatic means for shifting said saddle at the end of a Working operation on said objects into position to facilitate the application of the objects to the spindles, and means for simultaneously securing said objects to the spindles when the saddle is in such position, said saddle being adapted to return auto matically to its normal position at the commencement of the Working operation.

23. In a machine of the class described, the combination of a polishing Wheel, a traveling carriage provided With a head stock member and a tail stock member, a plurality of Work supports on each of said stocks, the supports on one end of said stocks being provided With spring engaging means for holding the objects to be Worked and means for simultaneously disengaging said Work supports.

24. In a machine of the class described, the combination of a polishing member, a carrier provided With a head stock member and a tail stock member for holding contemporaneously a series of pairs of supports for holding a plurality of objects to be oper ated upon simultaneously by said polishing member, individual supports for each of the objects on each of said stocks, the supports on one of said stocks being provided with spring-actuating means for holding the objects, and means for simultaneously engaging said Work supports.

JOHN F. GAIL.

Witnesses:

JOHN BURNS, J. H. CANTWELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

It is hereby certified that in Letters Patent No. 1,154,696, granted September 28, 1915, upon the application of John F. Gail, of Kenosha, Wisconsin, for an improvement in Polishing-Machines, an error appears in the printed specification requiring correction as follows: Page 6, line 12, claim 7, strike out the Words and comma carriage mounted thereon, a and insert the Words in engagement with said; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 29th day of August, A. D., 1916.

[SEAL] F. W. H. CLAY,

Acting Commissioner of Patents. Cl. 51-4. 

